Methods, systems, and computer program products for clustering and communicating
between Internet protocol multimedia subsystem (IMS) entities are disclosed. According to …

Methods, systems, and computer program products for clustering and communicating
between Internet protocol multimedia subsystem (IMS) entities and for supporting database …

Exemplary methods for establishing an emergency call and an emergency call-back for a
first User Equipment (UE) communicatively coupled to a visited Internet Protocol Multimedia …

Methods and apparatus to manage Internet Protocol (IP) Multimedia Subsystem (IMS)
network capacity are dis closed. An example method comprises identifying a termi nating …

Methods and apparatus for originating a Session Initiation Protocol (SIP) call from a user
equipment (UE) device in a network environment including a circuit-switched (CS) net work …

Methods, systems, and computer program products for a hierarchical, redundant OAM&P
architecture for use in an IP multimedia subsystem (IMS) are disclosed. According to one …

Methods and apparatus to route a communication session in an Internet Protocol (IP)
Multimedia Subsystem (IMS) net work are disclosed. An example method comprises …

Apparatuses, methods, and systems are disclosed for establishing an IP multimedia
subsystem session. One method includes receiving, at a first network entity from a user …

(*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35
“Operator Guidebook to IMS and New Generation Networks and USC 154 (b) by 1104 days …

(57) ABSTRACT A method and system of flow based charging for IP multi media System
Services are disclosed. The System includes a call processing Server, and a Session …